Weight Bias Internalization and Long-Term Weight Loss in Patients With Obesity.
Obesity
Weight bias internalization
Weight loss
Weight stigma
Journal
Annals of behavioral medicine : a publication of the Society of Behavioral Medicine
ISSN: 1532-4796
Titre abrégé: Ann Behav Med
Pays: England
ID NLM: 8510246
Informations de publication
Date de publication:
17 07 2019
17 07 2019
Historique:
pubmed:
12
10
2018
medline:
29
9
2020
entrez:
11
10
2018
Statut:
ppublish
Résumé
The relationship between weight bias internalization (WBI) and long-term weight loss is largely unknown. To determine the effects of weight loss on WBI and assess whether WBI impairs long-term weight loss. One hundred thirty-three adults with obesity completed the Weight Bias Internalization Scale (WBIS) at baseline, after a 14-week lifestyle intervention in which they lost ≥5 per cent of initial weight, and at weeks 24 and 52 of a subsequent randomized controlled trial (RCT) for weight-loss maintenance (66 weeks total). Linear mixed models were used to examine the effects of weight loss on WBIS scores and the effects of baseline WBIS scores on weight change over time. Logistic regression was used to determine the effects of baseline WBIS scores on achieving ≥5 and ≥10 per cent weight loss. Changes in weight did not predict changes in WBIS scores. Baseline WBIS scores predicted reduced odds of achieving ≥5 and ≥10 per cent weight loss at week 24 of the RCT (p values < .05). At week 52, the interaction between participant race and WBIS scores predicted weight loss (p = .046) such that nonblack (but not black) participants with higher baseline WBIS scores had lower odds of achieving ≥10 per cent weight loss (OR = 0.38, p = .01). Baseline WBIS scores did not significantly predict rate of weight change over time. Among participants in a weight loss maintenance trial, WBI did not change in relation to changes in weight. More research is needed to clarify the effects of WBI on long-term weight loss and maintenance across race/ethnicity. ClinicalTrials.gov identifier NCT02388568.
Sections du résumé
BACKGROUND
The relationship between weight bias internalization (WBI) and long-term weight loss is largely unknown.
PURPOSE
To determine the effects of weight loss on WBI and assess whether WBI impairs long-term weight loss.
METHODS
One hundred thirty-three adults with obesity completed the Weight Bias Internalization Scale (WBIS) at baseline, after a 14-week lifestyle intervention in which they lost ≥5 per cent of initial weight, and at weeks 24 and 52 of a subsequent randomized controlled trial (RCT) for weight-loss maintenance (66 weeks total). Linear mixed models were used to examine the effects of weight loss on WBIS scores and the effects of baseline WBIS scores on weight change over time. Logistic regression was used to determine the effects of baseline WBIS scores on achieving ≥5 and ≥10 per cent weight loss.
RESULTS
Changes in weight did not predict changes in WBIS scores. Baseline WBIS scores predicted reduced odds of achieving ≥5 and ≥10 per cent weight loss at week 24 of the RCT (p values < .05). At week 52, the interaction between participant race and WBIS scores predicted weight loss (p = .046) such that nonblack (but not black) participants with higher baseline WBIS scores had lower odds of achieving ≥10 per cent weight loss (OR = 0.38, p = .01). Baseline WBIS scores did not significantly predict rate of weight change over time.
CONCLUSIONS
Among participants in a weight loss maintenance trial, WBI did not change in relation to changes in weight. More research is needed to clarify the effects of WBI on long-term weight loss and maintenance across race/ethnicity.
CLINICAL TRIALS REGISTRATION
ClinicalTrials.gov identifier NCT02388568.
Identifiants
pubmed: 30304382
pii: 5126382
doi: 10.1093/abm/kay084
pmc: PMC6636884
doi:
Banques de données
ClinicalTrials.gov
['NCT02388568']
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Langues
eng
Sous-ensembles de citation
IM
Pagination
782-787Subventions
Organisme : NHLBI NIH HHS
ID : K23 HL140176
Pays : United States
Organisme : NINR NIH HHS
ID : T32 NR007100
Pays : United States
Informations de copyright
© Society of Behavioral Medicine 2018. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.
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